It was narrated from Ibn ‘Abbas: “The Prophet was صلی اللہ علیہ وآلہ وسلم commanded to prostrate on seven— and he was forbidden to tuck up his hair and garment — on his hands, his knees, the edges of his feet.” Sufyán said: “Ibn Tawds said to us: ‘He put his hand on his forehead and moved it down to his nose and said: This is one thing.”(Sahih)